Dorr Step-Up Ring 52-55 mm:With the DÖRR stepping rings (step-up/step-down) you can attach filters or other lens accessories to a lens with different diameter. The first number corresponds to the thread diameter of the lens, the second number to the thread diameter of the filter.
Features: Dorr 52-55mm Step-Up Ring
Filter thread diameter: 55 mm
Stepping ring type Step-Up
Lens thread diameter 52 mm
Material Metal
Color: black
No. 361181
For more information about, Dorr 52-55mm Step-Up Ring website.